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Expected Contribution and Benefit Payments (Detail)
$ in Thousands
Dec. 31, 2019
USD ($)
Defined Benefit Plan [Abstract]  
Contribution in year 2020 $ 71
Payments in year 2020 40
Payments in year 2021 225
Payments in year 2022 113
Payments in year 2023 201
Payments in year 2024 399
Payments in years 2025-2029 $ 1,707